---Which of the three optional courses did you like best, Joe?
---To tell you the truth, I didn’t like _______ of them.
| A．either | B．both | C．any | D．neither |
Several weeks had gone by _____ the head of the gallery realized the painting was missing.
| A．after | B．before | C．since | D．that |
The airline has a booklet _____ will tell you most of the important information to Europe.
| A．in which | B．about which | C．/ | D．that |
Students can easily fall behind in their studies ____ they don’t manage their spare time carefully.
| A．though | B．if | C．since | D．until |
He warmly congratulated them on _____ they had achieved in science and technology.
| A．that | B．where | C．what | D．which |
_____ of concrete and steel, the Petronas Towers in Kuala Lampu could provide a better chance of surviving than did the World Trade Centre buildings.
| A．Building | B．Built | C．To built | D．Having built |